Cryptography

Sesame leans on a little known project called keyczar, which was originally built by members of the Google Security Team.

Keyczar in turn builds upon pycrypto which aims to provide sane defaults for your Python crypto.

Installation

To install sesame, simply:

$ pip install --pre sesame

Since pip version 1.4 the --pre parameter is necessary since keyczar is still an alpha release. People using earlier versions of pip can omit the --pre.

Usage

The interface to Sesame intentionally resembles that of tar. There are only two sub-commands: encrypt and decrypt as described below:

usage: sesame encrypt [-h] [-k KEYFILE] [-f]
                      outputfile inputfile [inputfile ...]

positional arguments:
  outputfile            Encrypted file to be created
  inputfile             Files to be encrypted

optional arguments:
  -h, --help            show this help message and exit
  -k KEYFILE, --keyfile KEYFILE
                        Path to keyczar encryption key
  -f, --force           Force overwrite of existing encrypted file

usage: sesame decrypt [-h] [-k KEYFILE] [-f] [-O OUTPUT_DIR] [-T] inputfile

positional arguments:
  inputfile             File to be decrypted

optional arguments:
  -h, --help            show this help message and exit
  -k KEYFILE, --keyfile KEYFILE
                        Path to keyczar encryption key
  -f, --force           Force overwrite of existing decrypted file
  -O OUTPUT_DIR, --output-dir OUTPUT_DIR
                        Extract files into a specific directory
  -T, --try-all         Search for keys from current directory and try all of
                        them